Hanger for trolley-wires.



. W. A. MOGALLUM- HANGER FOR TROLLEY WIRES.

APPLICATION FILED MAY 19, 1910.

1,069,800, Patented Aug. 12, 1913.

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ATTORNEY.

TQE.

WILLIAM A. MCCALLUM, OF CINCINNATI, OHIO.

HANGER FOR TROLLEY-WIRES.

Application filed May 19, 1910.

Specification of Letters Patent.

Patented Aug. 12,1913.

Serial No. 562,150.

To all whom 2'25 may concern Be it known that I, lVrLLmM A. MCCAL- min,a citizen of the United States, residing at Cincinnati, in the county ofHamilton and State of Ohio, have invented new and useful Improvements inHangers for Trolleyires, of which the following is a specification.

lily invention relates to hangers for suspending the trolley wire of anelectric railway from its fixed supports; and more particularly to theclass of hangers employed in connection with a messenger cable,consisting essentially of a clip or fastening to engage the messengercable, a rod hung from the same, and an ear suspended from the rod andengaging the trolley wire.

The method of suspension by hangers from a messenger cable is used moregenerally on inter-urban railways where higher speeds are used, than onordinary street railways, and it is desirable in order to secure smoothrunning and perfect conduction to equalize as far as possible theyielding resistance of the trolley wire under the upward thrust of thetraveling conductor.

The weight of the hanger at suspension points, together with its fixityor rigidty of connection with the messenger cable, tends to concentrateand magnify the resistance at the hanger connections which ataccelerated speeds of the traveling conductor often produces hammeringand jumping at such points with consequent sparking and not infrequentinjuries.

1 have heretofore filed an application for Letters Patent now pendingfor issue as Serial. Number @8999, which. embodied certain specifiedimprovements in this class of hangers; and the present invention is inthe nature of an improvement upon said former invention designed toremedy the disadvantages herein specified; and it consists in a hanger,embodying a clip or fastening adapted to engage the messenger cable, andextended downward as a tubular shank, a rod or stem, engaging thetrolley ear and extending upward into the tubular shank, and providedwith a T-head resting at the bottoms of opposite vertical slots in theshank-whereby the stem is enabled to rise under the lifting action ofthe traveling conductor, independently of the messenger cable.

My invention is illustrated in the drawlngs accompanying and formingpart of this specification, in whicln Figure l is an elevation of myimproved hanger complete across the line of the messenger cable; andFig. 2 is an elevation of the same at right angles with the former view,that is: on the line of the messenger cable.

Referring now to the drawings, A designates the clip or fastening bywhich the hanger is suspended on the messenger cable, and, as shownherein, consists of two sister hooks, a, a, arranged side by side asupper integral extensions of a tubular shank, a which, preferably, isapproximately circular at the base-of the hooks a, but is thencedownward increasingly oval as indicated, to allow an oscillating orpendulous swing of the link B, presently to be described.

The tubular shank of the clip or fastenin A, is longitudinally slottedas at a for a limited distance at opposite sides as shown in Fig. 2 toreceive the opposite projections of a T-head Z) of the rod or link B ofthe hanger, which link passes upward into the tubular opening of theshank and is normally held suspended below by the lateral projections ofthe T-head 1) into the slots, through the wall of the tubular shank,resting upon the bottom of the slots.

The structure is substantially the same as shown in my said formerapplication, excepting that the shank is extended down ward and providedwith the slots o The link B, while normally, as shown, suspended by itsT-head b resting at the bottom of the slots, is thus permitted to belifted within the tubular inclosure of the shank a until its T-headstrikes the top of the slots a and the oval enlargement of the shankbefore referred to is to permit the link B a limited capacity to swingas a pendulum upon its T-head as a pivot without possibility ofdisengagement from the tubular shank.

While I have shown the hanger as comprising a sister-hook engagementwith the messenger cable, it will be manifest that any other mode offastening will serve the purpose, provided it permits a limited verticalmovement of the link B. I do not, therefore, confine my claim to thesedetails of construction.

The trolley wire 0 is shown suspended by an ear D secured upon the lowerend of the hanger. The form of these are also details immaterial to mypresent invention.

The mode of operation is as follows: In the passage of the travelingconduct-or held to contact with the trolley wire by constant upwardpressure of the spring lifting or wave motion thus created isaccommodated by the upward lift of the link B in the slots a As theconductor passes by the link again settles to its former position shownin the drawings. The oscillating or pendulous movement of the link isinclicated within exaggerated limits by dotted lines in Fig. 2.

I claim as my invention and desire to secure by Letters Patent of theUnited States 1. A trolley wire hanger consisting of a tubular shankprovided at its upper end with means for engagement with the mestrolleyear in rigid inter-engagement with itself.

2. In a trolley wire hanger a tubular shank provided at its upper endwith means for engaging a messenger cable or other support, and withelongated slots at opposite sides of the shank in direction of its axisas and for the purpose set forth.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

WILLIAM A. MOCALLUM.

Witnesses:

Lnwis M. Hosea, l/VALTER A. KNIGHT.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

